公开(公告)号：US20050083050A1

公开(公告)日：2005-04-21

申请号：US10935037

申请日：2004-09-07

申请人： Vladimir Tsukernik ,  Neil Goldfine ,  Andrew Washabaugh ,  Darrell Schlicker ,  Karen Walrath ,  Eric Hill ,  Vladimir Zilberstein

发明人： Vladimir Tsukernik ,  Neil Goldfine ,  Andrew Washabaugh ,  Darrell Schlicker ,  Karen Walrath ,  Eric Hill ,  Vladimir Zilberstein

IPC分类号： G01N27/82 ,  G01M17/02

CPC分类号： G01N27/82

摘要： Pressurized elastic support structures or balloons are used to press flexible sensors against the surface a material under test. Rigid support elements can also be incorporated into the inspection devices to maintain the basic shape of the inspection structure and to facilitate positioning of the sensors near the test material surface. The rigid supports can have the approximate shape of the test material surface or the pressurization of one or more balloons can be used to conform the sensor to the shape of the test material surface.

摘要翻译： 使用加压的弹性支撑结构或气球将柔性传感器压在表面上，以测试被测材料。 也可以将刚性支撑元件结合到检查装置中，以维持检查结构的基本形状并且便于传感器在测试材料表面附近的定位。 刚性支撑件可以具有测试材料表面的近似形状，或者可以使用一个或多个气囊的加压使传感器与测试材料表面的形状相一致。

公开(公告)号：US20070120561A1

公开(公告)日：2007-05-31

申请号：US11522628

申请日：2006-09-18

申请人： Neil Goldfine ,  Darrell Schlicker ,  Karen Walrath ,  Andrew Washabaugh ,  Vladimir Zilberstein ,  Vladimir Tsukernik

发明人： Neil Goldfine ,  Darrell Schlicker ,  Karen Walrath ,  Andrew Washabaugh ,  Vladimir Zilberstein ,  Vladimir Tsukernik

IPC分类号： G01N27/82

CPC分类号： G01N27/72 ,  G01B7/24 ,  G01B7/34 ,  G01N27/902 ,  G01R33/12

摘要： Material condition monitoring may be performed by electromagnetic sensors and sensor arrays mounted to the material surface. The sensors typically have a periodic winding or electrode structure that creates a periodic sensing field when driven by an electrical signal. The sensors can be thin and flexible so that they conform to the surface of the test material. They can also be mounted such that they do not significantly modify the environmental exposure conditions for the test material, such as by creating stand-off gaps between the sensor and material surface or by perforating the sensor substrate.

公开(公告)号：US20060082366A1

公开(公告)日：2006-04-20

申请号：US11071051

申请日：2005-03-02

申请人： Neil Goldfine ,  Darrell Schlicker ,  Karen Walrath ,  Volker Weiss ,  Andrew Washabaugh ,  Vladimir Zilberstein

发明人： Neil Goldfine ,  Darrell Schlicker ,  Karen Walrath ,  Volker Weiss ,  Andrew Washabaugh ,  Vladimir Zilberstein

IPC分类号： G01N27/82

CPC分类号： G01N27/72 ,  G01B7/24 ,  G01B7/34 ,  G01N27/90 ,  G01N27/902 ,  G01R33/12

摘要： Inductive sensors measure the near surface properties of conducting and magnetic material. A sensor may have primary windings with parallel extended winding segments to impose a spatially periodic magnetic field in a test material. Those extended portions may be formed by adjacent portions of individual drive coils. Sensing elements provided every other half wavelength may be connected together in series while the sensing elements in adjacent half wavelengths are spatially offset. Certain sensors include circular segments which create a circularly symmetric magnetic field that is periodic in the radial direction. Such sensors are particularly adapted to surround fasteners to detect cracks and can be mounted beneath a fastener head. In another sensor, sensing windings are offset along the length of parallel winding segments to provide material measurements over different locations when the circuit is scanned over the test material. The distance from the sensing elements to the ends of the primary winding may be kept constant as the offset space in between sensing elements is varied. An image of the material properties can be provided as the sensor is scanned across the material.

摘要翻译： 感应传感器测量导电和磁性材料的近表面性质。 传感器可以具有平行延伸的绕组段的初级绕组，以在测试材料中施加空间周期的磁场。 这些延伸部分可以由各个驱动线圈的相邻部分形成。 每隔一半波长提供的感测元件可以串联连接在一起，而相邻半波长中的感测元件在空间上偏移。 某些传感器包括产生在径向周期性的圆形对称磁场的圆形段。 这种传感器特别适于围绕紧固件以检测裂缝并且可以安装在紧固件头部下方。 在另一个传感器中，感测绕组沿着平行绕组段的长度偏移，以便在电路扫描测试材料时，通过不同位置提供材料测量。 当感测元件之间的偏移空间变化时，从感测元件到初级绕组的端部的距离可以保持恒定。 当传感器跨越材料扫描时，可以提供材料特性的图像。

公开(公告)号：US20050171703A1

公开(公告)日：2005-08-04

申请号：US11036780

申请日：2005-01-14

申请人： Neil Goldfine ,  Darrell Schlicker ,  Vladimir Zilberstein ,  Andrew Washabaugh ,  Volker Weiss ,  Christopher Craven ,  Ian Shay ,  David Grundy ,  Karen Walrath ,  Robert Lyons

发明人： Neil Goldfine ,  Darrell Schlicker ,  Vladimir Zilberstein ,  Andrew Washabaugh ,  Volker Weiss ,  Christopher Craven ,  Ian Shay ,  David Grundy ,  Karen Walrath ,  Robert Lyons

IPC分类号： G01N27/90 ,  G06F19/00

CPC分类号： G01N27/9013

摘要： Methods are described for assessing material condition. These methods include the use of multiple source fields for interrogating and loading of a multicomponent test material. Source fields include electric, magnetic, thermal, and acoustic fields. The loading field preferentially changes the material properties of a component of the test material, which allows the properties of the component materials to be separated. Methods are also described for monitoring changes in material state using separate drive and sense electrodes with some of the electrodes positioned on a hidden or even embedded material surface. Statistical characterization of the material condition is performed with sensor arrays that provide multiple responses for the material condition during loading. The responses can be combined into a statistical population that permits tracking with respect to loading history. Methods are also described for measuring the stress in the material by independently estimating effective electrical properties, such as magnetic permeability or electrical conductivity, using layered models or predetermined spatial distributions with depth that are then correlated with the stress.

摘要翻译： 描述了评估材料状况的方法。 这些方法包括使用多个源字段来询问和加载多组分测试材料。 源场包括电，磁，热和声场。 加载场优先改变测试材料的组分的材料性质，这允许分离组分材料的性质。 还描述了用于使用单独的驱动和感测电极来监测材料状态的变化的方法，其中一些电极位于隐藏的或甚至嵌入的材料表面上。 使用传感器阵列进行材料状态的统计表征，这些传感器阵列在加载期间为材料状态提供多个响应。 响应可以组合成允许跟踪加载历史的统计数据。 还描述了通过使用分层模型或具有深度的预定空间分布独立地估计有效电特性（例如磁导率或导电性）来测量材料中的应力的方法，然后与应力相关联。

公开(公告)号：US20070029997A1

公开(公告)日：2007-02-08

申请号：US11415396

申请日：2006-05-01

申请人： Neil Goldfine ,  Darrell Schlicker ,  Karen Walrath ,  Andrew Washabaugh ,  David Grundy

发明人： Neil Goldfine ,  Darrell Schlicker ,  Karen Walrath ,  Andrew Washabaugh ,  David Grundy

IPC分类号： G01N27/82

CPC分类号： G01N27/9046

摘要： Magnetic field based eddy-current sensing arrays measure the near surface properties conducting and magnetic materials. The arrays have a drive winding for imposing the magnetic field in a test material and at least two sense elements for sensing the response of the test material to the magnetic field. Each sense element has distinct leads for connection to impedance measurement instrumentation. The arrays have accurately positioned sense elements and drive winding conductors so that the sense element responses are essentially identical for test materials having uniform properties. The drive windings are typically formed into circular loops for examining material properties in the vicinity of circular features in the test material, such as holes or fasteners. For examining the material, the sensor arrays are rotated around the feature or mounted against a material surface and provide information from multiple locations around the feature to determine if cracks are present or to monitor crack growth.

摘要翻译： 基于磁场的涡流感测阵列测量近表面性质导电和磁性材料。 阵列具有用于将磁场施加在测试材料中的驱动绕组和用于感测测试材料对磁场的响应的至少两个感测元件。 每个感测元件具有不同的引线用于连接到阻抗测量仪器。 阵列具有精确定位的感测元件和驱动绕组导体，使得感测元件响应与具有均匀性质的测试材料基本相同。 驱动绕组通常形成为环形环，用于检查测试材料（例如孔或紧固件）中圆形特征附近的材料特性。 为了检查材料，传感器阵列围绕特征旋转或者安装在材料表面上，并且从特征周围的多个位置提供信息，以确定是否存在裂缝或监测裂纹扩展。

公开(公告)号：US20060186880A1

公开(公告)日：2006-08-24

申请号：US11408290

申请日：2006-04-20

申请人： Darrell Schlicker ,  Neil Goldfine ,  Andrew Washabaugh ,  Karen Walrath ,  Ian Shay ,  David Grundy ,  Mark Windoloski

发明人： Darrell Schlicker ,  Neil Goldfine ,  Andrew Washabaugh ,  Karen Walrath ,  Ian Shay ,  David Grundy ,  Mark Windoloski

IPC分类号： G01N27/82

CPC分类号： G01N27/9033 ,  G01N27/82 ,  G01N27/902 ,  G01N27/904

摘要： An automated drawing tool and a method for drawing a sensor layout. A sensor is drawn by selecting a sensor family, each sensor of the sensor family having at least one drive element to impose a magnetic field in a test material when driven by an electric signal, and at least one sense element for sensing a response of the test material. A set of layout rules are associated with the sensor family and are used in determining a sensor-layout. The automated drawing tool processes input information and the layout rules, for the sensor family, to automatically draw the sensor.

摘要翻译： 自动绘图工具和绘制传感器布局的方法。 通过选择传感器系列来绘制传感器，传感器系列的每个传感器具有至少一个驱动元件，以在由电信号驱动时在测试材料中施加磁场，以及至少一个感测元件，用于感测 测试材料。 一组布局规则与传感器系列相关联，并用于确定传感器布局。 自动绘图工具处理输入信息和传感器系列的布局规则，自动绘制传感器。

公开(公告)号：US20070236214A1

公开(公告)日：2007-10-11

申请号：US11807873

申请日：2007-05-30

申请人： Neil Goldfine ,  Darrell Schlicker ,  Karen Walrath ,  Andrew Washabaugh

发明人： Neil Goldfine ,  Darrell Schlicker ,  Karen Walrath ,  Andrew Washabaugh

IPC分类号： G01N27/72

CPC分类号： G01N27/72 ,  G01B7/24 ,  G01B7/34 ,  G01N27/90 ,  G01N27/902 ,  G01R33/12

摘要： Reference standards or articles having prescribed levels of damage are fabricated by monitoring an electrical property of the article material, mechanically loading the article, and removing the load when a change in electrical properties indicates a prescribed level of damage. The electrical property is measured with an electromagnetic sensor, such as a flexible eddy current sensor, attached to a material surface, which may be between layers of the article material. The damage may be in the form of a fatigue crack or a change in the mechanical stress underneath the sensor. The shape of the article material may be adjusted to concentrate the stress so that the damage initiates under the sensor. Examples adjustments to the article shape include the use of dogbone geometries with thin center sections, reinforcement ribs on the edges of the article, and radius cut-outs in the vicinity of the thin section.

摘要翻译： 通过监测物品的电气性能，机械装载物品以及当电气特性的变化表示规定的损伤程度时，去除负载来制造具有规定的损伤程度的参考标准或物品。 电气特性用电磁传感器（例如柔性涡流传感器）测量，该传感器连接到材料表面，材料表面可以在物品层之间。 损伤可能是疲劳裂纹的形式或传感器下面的机械应力的变化。 可以调节制品材料的形状以集中应力，使得损伤在传感器下方开始。 对物品形状的实例调整包括使用具有薄中心部分的狗骨形几何形状，在制品的边缘上使用加强筋，以及在薄部分附近使用半径切口。